Tag: GEDMatch


ancestrydna-zalewskiOne of those days I was waiting for finally happened. A DNA match contacted me that is from the Jacob Zalewski line that I had always assumed was the brother of my great-great grandfather, Frank Zalewski. This proves that Jacob and Frank are definitely related. They are probably brothers (as all other evidence points to) but not proven 100%.

Unfortunately, the match comes to me from AncestryDNA. While AncestryDNA is one of the most popular, it also gives the least amount of advanced tools. I cannot see where we match on our DNA as there is no Chromosome Browser like every other site has. I have contacted my match and asked if they would upload their data to GEDMatch so we can do the more advanced matching. I’d really love to see which part of my chromosome comes from my Zalewski line. That could point me towards more Zalewski relations and possibly finally breaking down more of that monstrous Zalewski line brick wall.

The possible Jacob-Frank connection all started back in July 2009 when I noticed a Jacob Zalewski family living with and quite near Frank and his family in Milwaukee in multiple city directories. After many years and finding more and more cross-family connections, I just assumed they were brothers as the pile of evidence was getting quite large. Though, I was always waiting and hoping for a DNA connection. I was planning on trying to convince a few distant cousins from that line that I had found to do a DNA test (I would probably even have paid for it.)

I’m excited. We’ll see where we go from here.

After getting my DNA tests completed and for the past few years pouring over that data using tools like GEDMatch, and most recently, Genome Mate, I’ve started to accumulate Most Recent Common Ancestors (MRCA) with some of my DNA matches. How to figure those out is another post entirely.

Granted, I don’t have a lot of confirmed MRCAs, yet, but I do have a few. You can use this data to make a chromosome mapping. Genome Mate does this for you in the software, but there is also a web version (seen below) that will do it for you. This will paint all of the segments on your chromosome that match those ancestors. Once you get a lot of confirmed MRCAs, the mapping looks really cool. Mine is getting started.

Click for full version.Do your own here: http://kittymunson.com/dna/ChromosomeMapper.php
Click for full version. Do your own here.

As you can see, I only have 2 MRCAs confirmed, one on each side. My paternal 3rd-great-grandparents, Michael Troka and Josylna Grabowska and my maternal great-great-grandparents, Carl Last & Augusta Luedtke.

The Troka connection is not yet fully confirmed, but the information we have is pretty solid. The Last connection is confirmed as I’ve matched up family trees with a 3rd cousin I found via a 23andMe match. I have a few more matches in progress that are close to finding information on our MRCA. It can be tough work sometimes, but there is hope of finding all new ancestors.

This is Part 4 in a series of post dedicated to finding out more information about your DNA test results from 23andMe or Family Tree DNA. If you haven’t read it, yet, view Part 1, Part 2 and Part 3.

Today we’re going to look into the last set of DNA that you can use in your research, Autosomal DNA. This is DNA which is inherited from the autosomal chromosomes. Humans have 22 pairs of autosomes and one pair of sex chromosomes (the X chromosome and the Y chromosome). Each pair of autosomes is inherited the same way.

For each pair of autosomes, you received one from your mother and one from your father. Before the autosomes were sent to you, they were randomly jumbled in a process called recombination. Your parents also received their autosomes from their parents who also recombined them. So, your autosomes are random mixtures of all of your ancestors autosomes. All branches of your ancestry contribute to your Autosomal DNA. Obviously, the more distant the ancestor is, the less you share with them. Closer relatives will share larger fragments with you compared to distant relatives.

For example, this chart below shows, on average, how much autosomal DNA you share with specific relatives:

Public domain Image from Wikimedia Commons. Click for larger.
Public domain Image from Wikimedia Commons. Click for larger.

This is the DNA that most places use to match you up with potential cousins using Relative Finder from 23andMe or Family Finder from Family Tree DNA. If you have shared genomes with people on 23andMe, you can go to “Ancestry Labs” on the menu and choose “Family Inheritance: Advanced” to see which parts of your autosomal DNA you share, if any.

GEDMatch.com can also compare your Autosomal DNA and show you, in great detail, where you match with other individuals.

I hope you learned something. Remember, DNA testing is much more useful with an already sourced genealogy paper trail. Otherwise it will be very difficult to see how you relate to your DNA matches.

DNA KitsIn the last week or so I’ve dug deeper into my DNA testing results mainly from my 23andMe test. I hope to have this be my first post in a “series” of posts about DNA for genealogy since I’ve done a lot of other research about different types of information found in your DNA.

Another genealogist on Twitter pointed me to a genetic genealogy matching site called GEDMatch.com. The site allows you to upload a copy of your raw DNA data from 23andMe or Family Tree DNA and then let you do all sorts of matching and comparing with it. The site’s user interface could use a bit of work, but we’re pretty used to that in genealogy (I’m looking at you Find-A-Grave and almost every USGenWeb site.) But underneath the hood of the site, it’s very powerful once you figure out how to use it correctly.

The first step in getting your data to GEDMatch is to get it from your original testing site. I went with 23andMe, but it seems Family Tree DNA is just as simple. Sadly, Ancestry.com does not yet allow you to download your raw data from their site, but hopefully they will add this in the future. It literally is your data.

The steps to getting this file from 23andMe is pretty easy. Even if you don’t plan on uploading it anywhere else, it’s always nice to have a copy locally as a backup.

  1. Log into your 23andMe account.
  2. At the top-right of the site, mouse over the “Account” option and select “Browse Raw Data.”
  3. On the next page, near the top, there should be a “download raw data” link. Click it.
  4. This will bring you to the download screen. Fill in the information and make sure to select “All Data.”
  5. It should then ask you to download a compressed ZIP file. This is your raw data.
  6. Feel free to do this with every account you manage, if you have more than one.

Once you have that information on your computer, browse over to GEDMatch.

  1. You’ll need to scroll down a bit to the “Upload Your Data Files” section and click on “Upload your 23andMe DNA raw data file”
  2. They have another list of steps to take to get your raw data, feel free to look it over again.
  3. Fill out the form as they tell you and upload your raw data.

Now, it will take about 24 hours for them to process your data, so check back. Come back here in the next day or so for the next in the series tentatively titled, “Now What? Can They Clone Me?” Visit Part 2 here to learn about the YDNA and mtDNA lines.

Image from nosha@flickr